A Cottonwood woman was sentenced to more than 21 years in federal prison by a U.S. District Court judge Monday after a jury convicted her of selling and possessing child pornography.

Sarah Melissa Cox, 41, was arrested in 2016 after messages on the chat app Kik were revealed showing the extent of Cox's crimes, including planned conspiracy to produce more images of child pornography, according to a news release from the U.S. Attorney's Office.

A jury convicted Cox at a trial in May of three counts of receipt of child pornography, one count of noticing or advertising child pornography, and one count of distribution of child pornography.

“Cox not only viewed, described, and exchanged pictures and videos of horrendous acts against infants and young children, she also suggested kidnapping and sexually assaulting other children,” said First Assistant United States Attorney Elizabeth A. Strange, in the news release.

Her online conversations with Richard Hennis, a man from Colorado, shows detailed descriptions of kidnapping, molesting and assaulting children, the release stated.

Images of child pornography were exchanged between the pair, and a plot was discussed to produce more images and videos of child pornography themselves, according to Strange.

“The lengthy sentence handed down, in this case, is instrumental in pursuing justice for the victims of this child predator’s heinous crimes,” said Scott Brown, special agent in charge of Homeland Security Investigations, in Phoenix.

Cox will serve 262 months in prison and the rest of her life on parole.